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Labby

Develop skills in Linux, DevOps, Cybersecurity, Programming, Data Science, and more through interactive labs and real-world projects.

Location Hong Kong Joined Joined on  Personal website https://labex.io/ twitter website
CSS Projects: Grid Pet Showcase, Fan Hover Effects, and Responsive News Homepage Tutorial
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CSS Projects: Grid Pet Showcase, Fan Hover Effects, and Responsive News Homepage Tutorial

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2 min read

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Kubernetes Hands-On: PersistentVolumes, CronJobs, ConfigMaps, and Secure Kubeconfig Management Labs
Cover image for Kubernetes Hands-On: PersistentVolumes, CronJobs, ConfigMaps, and Secure Kubeconfig Management Labs

Kubernetes Hands-On: PersistentVolumes, CronJobs, ConfigMaps, and Secure Kubeconfig Management Labs

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2 min read
5 Hands-On Linux Labs: Master File System Paths, User Management, and Command Pipelines
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5 Hands-On Linux Labs: Master File System Paths, User Management, and Command Pipelines

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3 min read
4 MySQL Labs: Automate Tasks with Event Scheduler, Master CTEs, and Pro Data Handling
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4 MySQL Labs: Automate Tasks with Event Scheduler, Master CTEs, and Pro Data Handling

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2 min read
React Project Path: Build 5 Practical Apps (Notes, Theme Switcher, Custom Hooks) in 90 Minutes
Cover image for React Project Path: Build 5 Practical Apps (Notes, Theme Switcher, Custom Hooks) in 90 Minutes

React Project Path: Build 5 Practical Apps (Notes, Theme Switcher, Custom Hooks) in 90 Minutes

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3 min read
Shell Scripting Mastery: 5 Challenges - Recursive Functions, Bubble Sort CLI, and System Config Analysis
Cover image for Shell Scripting Mastery: 5 Challenges - Recursive Functions, Bubble Sort CLI, and System Config Analysis

Shell Scripting Mastery: 5 Challenges - Recursive Functions, Bubble Sort CLI, and System Config Analysis

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3 min read
Build 3 React Apps: Responsive Navigation Hook, Context Theme Switcher, Dynamic UI Labs
Cover image for Build 3 React Apps: Responsive Navigation Hook, Context Theme Switcher, Dynamic UI Labs

Build 3 React Apps: Responsive Navigation Hook, Context Theme Switcher, Dynamic UI Labs

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2 min read
NumPy Labs: Minkowski Distance, Image Edge Detection, and Array Reshaping for Data Science
Cover image for NumPy Labs: Minkowski Distance, Image Edge Detection, and Array Reshaping for Data Science

NumPy Labs: Minkowski Distance, Image Edge Detection, and Array Reshaping for Data Science

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3 min read
MongoDB Labs: Write Queries, Design User Profiles, and Master CRUD Operations
Cover image for MongoDB Labs: Write Queries, Design User Profiles, and Master CRUD Operations

MongoDB Labs: Write Queries, Design User Profiles, and Master CRUD Operations

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2 min read
Jenkins CI/CD Starter Kit: 5 Labs on Docker, Git Integration, and User Management
Cover image for Jenkins CI/CD Starter Kit: 5 Labs on Docker, Git Integration, and User Management

Jenkins CI/CD Starter Kit: 5 Labs on Docker, Git Integration, and User Management

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3 min read
Red Hat Enterprise Linux Troubleshooting: 4 Labs on LVM Extension, Permissions, SELinux & Shell Scripting
Cover image for Red Hat Enterprise Linux Troubleshooting: 4 Labs on LVM Extension, Permissions, SELinux & Shell Scripting

Red Hat Enterprise Linux Troubleshooting: 4 Labs on LVM Extension, Permissions, SELinux & Shell Scripting

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2 min read
MySQL Tutorial: Master Table Structure, User Privileges, and the Movie Data Challenge in 3 Practical Labs
Cover image for MySQL Tutorial: Master Table Structure, User Privileges, and the Movie Data Challenge in 3 Practical Labs

MySQL Tutorial: Master Table Structure, User Privileges, and the Movie Data Challenge in 3 Practical Labs

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2 min read
Core HTML Skills: Build a Random Greeting Card Generator, Takeout Review System, and Vue Data Visualization
Cover image for Core HTML Skills: Build a Random Greeting Card Generator, Takeout Review System, and Vue Data Visualization

Core HTML Skills: Build a Random Greeting Card Generator, Takeout Review System, and Vue Data Visualization

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2 min read
Jenkins CI/CD: Secure User Access, Automate Freestyle Builds, and Integrate Git Source Control
Cover image for Jenkins CI/CD: Secure User Access, Automate Freestyle Builds, and Integrate Git Source Control

Jenkins CI/CD: Secure User Access, Automate Freestyle Builds, and Integrate Git Source Control

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2 min read
DevOps Foundations: 5 Hands-On Labs on Linux Security (SELinux, Permissions) and Podman/Skopeo Container Management
Cover image for DevOps Foundations: 5 Hands-On Labs on Linux Security (SELinux, Permissions) and Podman/Skopeo Container Management

DevOps Foundations: 5 Hands-On Labs on Linux Security (SELinux, Permissions) and Podman/Skopeo Container Management

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2 min read
MySQL Database Performance: Managing Indexes, SHA-256 Encryption, and Secure Data Insertion
Cover image for MySQL Database Performance: Managing Indexes, SHA-256 Encryption, and Secure Data Insertion

MySQL Database Performance: Managing Indexes, SHA-256 Encryption, and Secure Data Insertion

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2 min read
SQLite Advanced Labs: CTE Queries, Foreign Keys, and Data Integrity for Embedded Apps
Cover image for SQLite Advanced Labs: CTE Queries, Foreign Keys, and Data Integrity for Embedded Apps

SQLite Advanced Labs: CTE Queries, Foreign Keys, and Data Integrity for Embedded Apps

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3 min read
MySQL Labs: Change Default Value, Add Constraints, and Insert Student Data
Cover image for MySQL Labs: Change Default Value, Add Constraints, and Insert Student Data

MySQL Labs: Change Default Value, Add Constraints, and Insert Student Data

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2 min read
CompTIA Prep: 4 Hands-On Labs for Linux Hardening, Log Analysis, and Docker Security
Cover image for CompTIA Prep: 4 Hands-On Labs for Linux Hardening, Log Analysis, and Docker Security

CompTIA Prep: 4 Hands-On Labs for Linux Hardening, Log Analysis, and Docker Security

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2 min read
Practical Redis Database Mastery: Labs on Sorted Sets, Performance Tuning, and List Commands
Cover image for Practical Redis Database Mastery: Labs on Sorted Sets, Performance Tuning, and List Commands

Practical Redis Database Mastery: Labs on Sorted Sets, Performance Tuning, and List Commands

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2 min read
Redis Basic Data Management: Key-Value Operations and Atomic Counters Tutorial
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Redis Basic Data Management: Key-Value Operations and Atomic Counters Tutorial

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2 min read
Ansible Automation Mastery: Hands-On Labs for Inventory Grouping, Apt Package Management, and the Fetch Module
Cover image for Ansible Automation Mastery: Hands-On Labs for Inventory Grouping, Apt Package Management, and the Fetch Module

Ansible Automation Mastery: Hands-On Labs for Inventory Grouping, Apt Package Management, and the Fetch Module

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2 min read
Java Programming Labs: Calculate Sum of Digits, Standard Deviation, and Coordinate Subtraction (5 Hands-on Exercises)
Cover image for Java Programming Labs: Calculate Sum of Digits, Standard Deviation, and Coordinate Subtraction (5 Hands-on Exercises)

Java Programming Labs: Calculate Sum of Digits, Standard Deviation, and Coordinate Subtraction (5 Hands-on Exercises)

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3 min read
Nmap Hands-On: Explore Verbosity, UDP Scanning, and Network Discovery Techniques
Cover image for Nmap Hands-On: Explore Verbosity, UDP Scanning, and Network Discovery Techniques

Nmap Hands-On: Explore Verbosity, UDP Scanning, and Network Discovery Techniques

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2 min read
LabEx Launches 2025 Black Friday Deals
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LabEx Launches 2025 Black Friday Deals

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1 min read
Linux Security Auditing: 5 Hands-On Labs for Rsync Anonymous Sync, SMB Guest Access, and SSH Key Enumeration
Cover image for Linux Security Auditing: 5 Hands-On Labs for Rsync Anonymous Sync, SMB Guest Access, and SSH Key Enumeration

Linux Security Auditing: 5 Hands-On Labs for Rsync Anonymous Sync, SMB Guest Access, and SSH Key Enumeration

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3 min read
Apply Descendant Selectors & Background Styles: Essential CSS Techniques for HTML
Cover image for Apply Descendant Selectors & Background Styles: Essential CSS Techniques for HTML

Apply Descendant Selectors & Background Styles: Essential CSS Techniques for HTML

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2 min read
3 Hands-On PostgreSQL Labs: Setup, Data Filtering (WHERE/LIKE), and PL/pgSQL Error Handling
Cover image for 3 Hands-On PostgreSQL Labs: Setup, Data Filtering (WHERE/LIKE), and PL/pgSQL Error Handling

3 Hands-On PostgreSQL Labs: Setup, Data Filtering (WHERE/LIKE), and PL/pgSQL Error Handling

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2 min read
NumPy Array Operations Challenge: Master Indexing, Slicing, and Binary Operations (3 Hands-On Labs)
Cover image for NumPy Array Operations Challenge: Master Indexing, Slicing, and Binary Operations (3 Hands-On Labs)

NumPy Array Operations Challenge: Master Indexing, Slicing, and Binary Operations (3 Hands-On Labs)

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2 min read
Alibaba Cloud Labs: Canary Releases with MSE, Kubernetes Log Mastery & Tomcat Session Sharing
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Alibaba Cloud Labs: Canary Releases with MSE, Kubernetes Log Mastery & Tomcat Session Sharing

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4 min read
RHEL Quick Start: 4 Hands-on Labs for Storage, Security, and Container Persistence
Cover image for RHEL Quick Start: 4 Hands-on Labs for Storage, Security, and Container Persistence

RHEL Quick Start: 4 Hands-on Labs for Storage, Security, and Container Persistence

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2 min read
RHCSA Prep: 4 Hands-On Labs for RHEL - Tar, Shell Scripting, User Groups, and Symbolic Links
Cover image for RHCSA Prep: 4 Hands-On Labs for RHEL - Tar, Shell Scripting, User Groups, and Symbolic Links

RHCSA Prep: 4 Hands-On Labs for RHEL - Tar, Shell Scripting, User Groups, and Symbolic Links

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2 min read
Java LocalDate: 5 Essential Methods (plus, ofEpochDay, now(Clock)) for Accurate Date Calculations
Cover image for Java LocalDate: 5 Essential Methods (plus, ofEpochDay, now(Clock)) for Accurate Date Calculations

Java LocalDate: 5 Essential Methods (plus, ofEpochDay, now(Clock)) for Accurate Date Calculations

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3 min read
Database Essentials: Insert Student Data, MySQL Backup with mysqldump, and Index Optimization
Cover image for Database Essentials: Insert Student Data, MySQL Backup with mysqldump, and Index Optimization

Database Essentials: Insert Student Data, MySQL Backup with mysqldump, and Index Optimization

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2 min read
Python Coding Challenges: FizzBuzz, String Equality, and Heterogram Checks for Beginners
Cover image for Python Coding Challenges: FizzBuzz, String Equality, and Heterogram Checks for Beginners

Python Coding Challenges: FizzBuzz, String Equality, and Heterogram Checks for Beginners

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3 min read
Hydra Brute-Force: 5 Labs to Crack Telnet, HTTP, and FTP Credentials (Verify Installation & Speed)
Cover image for Hydra Brute-Force: 5 Labs to Crack Telnet, HTTP, and FTP Credentials (Verify Installation & Speed)

Hydra Brute-Force: 5 Labs to Crack Telnet, HTTP, and FTP Credentials (Verify Installation & Speed)

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3 min read
SQLite Performance Tuning: 3 Practical Labs for PRAGMA, Indexing, and FTS5 Full-Text Search
Cover image for SQLite Performance Tuning: 3 Practical Labs for PRAGMA, Indexing, and FTS5 Full-Text Search

SQLite Performance Tuning: 3 Practical Labs for PRAGMA, Indexing, and FTS5 Full-Text Search

Comments
2 min read
Jenkins CI/CD: Docker Installation, Interface Navigation, and Declarative Pipeline Tutorial
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Jenkins CI/CD: Docker Installation, Interface Navigation, and Declarative Pipeline Tutorial

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2 min read
4 HTML Challenges: Build a Custom Membership Card & Fix Display Issues with Real-World Code Labs
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4 HTML Challenges: Build a Custom Membership Card & Fix Display Issues with Real-World Code Labs

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3 min read
4 Linux Security Labs: Implementing CIA Triad, GPG Cryptography, and Detecting Command Injection Attacks
Cover image for 4 Linux Security Labs: Implementing CIA Triad, GPG Cryptography, and Detecting Command Injection Attacks

4 Linux Security Labs: Implementing CIA Triad, GPG Cryptography, and Detecting Command Injection Attacks

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3 min read
Red Hat Enterprise Linux: Configure Firewalld, Secure SSH Keys, and Container Persistence Labs
Cover image for Red Hat Enterprise Linux: Configure Firewalld, Secure SSH Keys, and Container Persistence Labs

Red Hat Enterprise Linux: Configure Firewalld, Secure SSH Keys, and Container Persistence Labs

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2 min read
5 Hands-On Redis Labs: Sorted Sets, Pub/Sub Messaging, Transactions, and Security Configuration
Cover image for 5 Hands-On Redis Labs: Sorted Sets, Pub/Sub Messaging, Transactions, and Security Configuration

5 Hands-On Redis Labs: Sorted Sets, Pub/Sub Messaging, Transactions, and Security Configuration

Comments
3 min read
Hands-On MongoDB: 3 Labs to Filter Collections, Create Schemas, and Model User Profiles
Cover image for Hands-On MongoDB: 3 Labs to Filter Collections, Create Schemas, and Model User Profiles

Hands-On MongoDB: 3 Labs to Filter Collections, Create Schemas, and Model User Profiles

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2 min read
5 Pandas Labs: Master .query(), E-commerce String Cleaning, and Advanced Data Filtering with .where()
Cover image for 5 Pandas Labs: Master .query(), E-commerce String Cleaning, and Advanced Data Filtering with .where()

5 Pandas Labs: Master .query(), E-commerce String Cleaning, and Advanced Data Filtering with .where()

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3 min read
5 Python Projects for DevOps: Build a Network Scanner, Tkinter GUI, and Game Automation Scripts
Cover image for 5 Python Projects for DevOps: Build a Network Scanner, Tkinter GUI, and Game Automation Scripts

5 Python Projects for DevOps: Build a Network Scanner, Tkinter GUI, and Game Automation Scripts

Comments
3 min read
4 NumPy Labs: Array Creation, Advanced Indexing, Vectorized KNN, and Gradient Edge Detection
Cover image for 4 NumPy Labs: Array Creation, Advanced Indexing, Vectorized KNN, and Gradient Edge Detection

4 NumPy Labs: Array Creation, Advanced Indexing, Vectorized KNN, and Gradient Edge Detection

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3 min read
Scikit-Learn 4-Step Path: Mastering Classification with Naive Bayes, SVM, and Essential Metrics
Cover image for Scikit-Learn 4-Step Path: Mastering Classification with Naive Bayes, SVM, and Essential Metrics

Scikit-Learn 4-Step Path: Mastering Classification with Naive Bayes, SVM, and Essential Metrics

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3 min read
SQLite Mastery: 5 Labs on Database Backup, CTE Queries, and Linux Setup for Data Management
Cover image for SQLite Mastery: 5 Labs on Database Backup, CTE Queries, and Linux Setup for Data Management

SQLite Mastery: 5 Labs on Database Backup, CTE Queries, and Linux Setup for Data Management

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3 min read
Visualize Data Stories: 5 Matplotlib Labs on Subplots, Scatter, Pie Charts, and Histograms
Cover image for Visualize Data Stories: 5 Matplotlib Labs on Subplots, Scatter, Pie Charts, and Histograms

Visualize Data Stories: 5 Matplotlib Labs on Subplots, Scatter, Pie Charts, and Histograms

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2 min read
Nmap Mastery Path: 3 Hands-On Labs to Scan, Exploit Vulnerabilities, and Explore Verbosity Levels
Cover image for Nmap Mastery Path: 3 Hands-On Labs to Scan, Exploit Vulnerabilities, and Explore Verbosity Levels

Nmap Mastery Path: 3 Hands-On Labs to Scan, Exploit Vulnerabilities, and Explore Verbosity Levels

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2 min read
Red Hat Enterprise Linux: Hands-On Labs to Extend LVM, Troubleshoot SELinux Policy, and Master Shell Scripting
Cover image for Red Hat Enterprise Linux: Hands-On Labs to Extend LVM, Troubleshoot SELinux Policy, and Master Shell Scripting

Red Hat Enterprise Linux: Hands-On Labs to Extend LVM, Troubleshoot SELinux Policy, and Master Shell Scripting

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3 min read
Kali Linux Lab: Build Tool Directory, Nmap Port Scan, and Metasploit Console Start
Cover image for Kali Linux Lab: Build Tool Directory, Nmap Port Scan, and Metasploit Console Start

Kali Linux Lab: Build Tool Directory, Nmap Port Scan, and Metasploit Console Start

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2 min read
MongoDB Tutorial: Hands-On Labs to Create MongoDB Collection and Master NoSQL CRUD Operations
Cover image for MongoDB Tutorial: Hands-On Labs to Create MongoDB Collection and Master NoSQL CRUD Operations

MongoDB Tutorial: Hands-On Labs to Create MongoDB Collection and Master NoSQL CRUD Operations

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1 min read
Alibaba Cloud Hands-On: Build AI with TensorFlow, Automate IaC with Terraform, and Secure Websites with WAF
Cover image for Alibaba Cloud Hands-On: Build AI with TensorFlow, Automate IaC with Terraform, and Secure Websites with WAF

Alibaba Cloud Hands-On: Build AI with TensorFlow, Automate IaC with Terraform, and Secure Websites with WAF

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2 min read
Hands-On Kali Linux Setup: Verify Version, Environment, and Tool Directory Structure
Cover image for Hands-On Kali Linux Setup: Verify Version, Environment, and Tool Directory Structure

Hands-On Kali Linux Setup: Verify Version, Environment, and Tool Directory Structure

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2 min read
Optimizing C++ Fibonacci Performance, Fixing C++14 Bugs, and Singleton Design: 5 Hands-On Labs
Cover image for Optimizing C++ Fibonacci Performance, Fixing C++14 Bugs, and Singleton Design: 5 Hands-On Labs

Optimizing C++ Fibonacci Performance, Fixing C++14 Bugs, and Singleton Design: 5 Hands-On Labs

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4 min read
MongoDB CRUD & Schema Design: 5 Labs to Write Queries, Filter, Delete, and Export Data
Cover image for MongoDB CRUD & Schema Design: 5 Labs to Write Queries, Filter, Delete, and Export Data

MongoDB CRUD & Schema Design: 5 Labs to Write Queries, Filter, Delete, and Export Data

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2 min read
Docker Labs: Run Containers, Master Graceful Shutdown (Arctic Mission), and Image Repository Search
Cover image for Docker Labs: Run Containers, Master Graceful Shutdown (Arctic Mission), and Image Repository Search

Docker Labs: Run Containers, Master Graceful Shutdown (Arctic Mission), and Image Repository Search

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2 min read
Bash Scripting for Linux Sysadmins: Automate File Metadata, User Management, and Logic Patterns
Cover image for Bash Scripting for Linux Sysadmins: Automate File Metadata, User Management, and Logic Patterns

Bash Scripting for Linux Sysadmins: Automate File Metadata, User Management, and Logic Patterns

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2 min read
JavaScript Kickstart: 4 Hands-On Labs for CSS Selectors, Box Shadows, and Array Manipulation
Cover image for JavaScript Kickstart: 4 Hands-On Labs for CSS Selectors, Box Shadows, and Array Manipulation

JavaScript Kickstart: 4 Hands-On Labs for CSS Selectors, Box Shadows, and Array Manipulation

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2 min read
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